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Offline Daniel  
#1 Posted : 02 October 2009 05:18:26(UTC)
Daniel

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Hi Guys,

This is some great software you have here and I commend you for the great effort that has gone into it!

I have a question about how to address the answers from the following example:


I tried addressing it as a vector, but it is a scaler so this will not work.

Thanks in advance,
Daniel
Offline omorr  
#2 Posted : 02 October 2009 13:06:10(UTC)
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Hello Daniel
Daniel wrote:
I have a question about how to address the answers from the following example:


I tried addressing it as a vector, but it is a scaler so this will not work

The Equation systems template should, actually, give a vector. Try this:
x←10±5
x=sys(15;5;2;1)
el(x;1;1)=15
el(x;2;1)=5
As this is a vector you can omit the second index
BTW, it seems there are some problems with Equation system. Please look at the
http://en.smath.info/forum/default.aspx?g=posts&t=222
Regards,
Radovan

Edited by user 02 October 2009 13:17:47(UTC)  | Reason: Not specified

When Sisyphus climbed to the top of a hill, they said: "Wrong boulder!"
Offline Daniel  
#3 Posted : 04 October 2009 05:07:25(UTC)
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Ahh I see, I was trying to access this using the matrix minor function thinking it was the same as what the key "[" provides (which I only just figured out too!).
I could not find a reference to access matrix elements in your SMath tutorial, but did find it here: http://en.smath.info/for...t.aspx?g=posts&t=138
Offline omorr  
#4 Posted : 04 October 2009 12:48:16(UTC)
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Hello Daniel,
Daniel wrote:
Ahh I see, I was trying to access this using the matrix minor function thinking it was the same as what the key "[" provides (which I only just figured out too!).
I could not find a reference to access matrix elements in your SMath tutorial, but did find it here: http://en.smath.info/for...t.aspx?g=posts&t=138


Take a look at http://smath.info/wiki/Matrices.ashx or http://smath.info/wiki/Tutorials.ashx

Regards,
Radovan

Edited by user 04 October 2009 12:50:19(UTC)  | Reason: Not specified

When Sisyphus climbed to the top of a hill, they said: "Wrong boulder!"
Offline Andrey Ivashov  
#5 Posted : 05 October 2009 04:04:18(UTC)
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Everything is true. Thank you Radovan Good
Offline omorr  
#6 Posted : 05 October 2009 13:01:09(UTC)
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You are welcome, and welcome back Good
When Sisyphus climbed to the top of a hill, they said: "Wrong boulder!"
Offline ElSid  
#7 Posted : 05 October 2009 23:57:43(UTC)
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Nice to see vectors with single subscripts. Was a literal subscript (in Mathcad its the {.}) implemented? Also, do all matrix/array/vectors start at 1? In Mathcad the Origin defaults to "0". Either way is fine.
Offline omorr  
#8 Posted : 06 October 2009 01:23:33(UTC)
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Hello ElSid
ElSid wrote:
Nice to see vectors with single subscripts. Was a literal subscript (in Mathcad its the {.}) implemented? Also, do all matrix/array/vectors start at 1? In Mathcad the Origin defaults to "0". Either way is fine.

As I remember, few posts mentioned literal subscript. You are right, we (Mathcad users) are used to literal index notation. I think this is not implemented. The final decission is on SMath creators.

Also, we are used to ORIGIN in Mathcad. As I remember, ORIGIN made problems in earlier version of Mathcad. I agree with you, starting index at 0 or 1 makes no difference, as far as I am concerned. In my experience, the only use of ORIGIN was to set it up to 0 or 1. I do not remember that I set it up to some other values.

Regards,
Radovan

Edited by user 06 October 2009 02:24:16(UTC)  | Reason: Not specified

When Sisyphus climbed to the top of a hill, they said: "Wrong boulder!"
Offline ElSid  
#9 Posted : 06 October 2009 06:01:48(UTC)
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omorr wrote:
Hello ElSid
Also, we are used to ORIGIN in Mathcad. As I remember, ORIGIN made problems in earlier version of Mathcad. I agree with you, starting index at 0 or 1 makes no difference, as far as I am concerned. In my experience, the only use of ORIGIN was to set it up to 0 or 1. I do not remember that I set it up to some other values.

Regards,
Radovan

Just curious to know which way the developer goes. Mathcad defaults to ORIGIN=0. For most people, ORIGIN=1 is initially easier, although thinking of an initial state (velocity sub initial) is typically written with 0 Good
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